TY  - JOUR
A1  - Löblein, Jochen
A1  - Lorson, Thomas
A1  - Komma, Miriam
A1  - Kielholz, Tobias
A1  - Windbergs, Maike
A1  - Dalton, Paul D.
A1  - Luxenhofer, Robert
T1  - An initiator- and catalyst-free hydrogel coating process for 3D printed medical-grade poly(ε-caprolactone)
T2  - Beilstein journal of organic chemistry
N2  - Additive manufacturing or 3D printing as an umbrella term for various materials processing methods has distinct advantages over many other processing methods, including the ability to generate highly complex shapes and designs. However, the performance of any produced part not only depends on the material used and its shape, but is also critically dependent on its surface properties. Important features, such as wetting or fouling, critically depend mainly on the immediate surface energy. To gain control over the surface chemistry post-processing modifications are generally necessary, since it′s not a feature of additive manufacturing. Here, we report on the use of initiator and catalyst-free photografting and photopolymerization for the hydrophilic modification of microfiber scaffolds obtained from hydrophobic medical-grade poly(ε-caprolactone) via melt-electrowriting. Contact angle measurements and Raman spectroscopy confirms the formation of a more hydrophilic coating of poly(2-hydroxyethyl methacrylate). Apart from surface modification, we also observe bulk polymerization, which is expected for this method, and currently limits the controllability of this procedure.
KW  - additive manufacturing
KW  - light-induced polymerization
KW  - self-initiated photografting and photopolymerization
KW  - surface-initiated polymerization
KW  - surface modification
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/62742
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-627429
SN  - 1860-5397
N1  - We gratefully acknowledge financial support by the Volkswagen Stiftung (Grant No. 93 417).
VL  - 17
SP  - 2095
EP  - 2101
PB  - Beilstein-Institut zur Förderung der Chemischen Wissenschaften
CY  - Frankfurt, Main
ER  -